Difference between revisions of "Eriogonum umbellatum var. haussknechtii"

(Dammer) M. E. Jones

Contr. W. Bot. 11: 6. 1903.

Common names: Haussknecht’s sulphur flower
Basionym: Eriogonum haussknechtii Dammer Gartenflora 40: 493, fig. 92. 1891 (as hausknecktii)
Synonyms: Eriogonum umbellatum subsp. haussknechtii (Dammer) S. Stokes
Treatment appears in FNA Volume 5. Treatment on page 342. Mentioned on page 338, 365.
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|common_names=Haussknecht’s sulphur flower
 
|common_names=Haussknecht’s sulphur flower
|basionyms={{Treatment/ID/Synonym
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|basionyms={{Treatment/ID/Basionym
 
|name=Eriogonum haussknechtii
 
|name=Eriogonum haussknechtii
 
|authority=Dammer
 
|authority=Dammer
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|publication_title=Gartenflora
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|publication_place=40: 493, fig. 92. 1891 (as hausknecktii)
 
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|synonyms={{Treatment/ID/Synonym
 
|synonyms={{Treatment/ID/Synonym
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|elevation=1000-2500(-3100) m
 
|elevation=1000-2500(-3100) m
 
|distribution=Oreg.;Wash.
 
|distribution=Oreg.;Wash.
|discussion=<p>Variety haussknechtii, as here circumscribed, is a high-elevation taxon found mainly on volcanic peaks in north-central Oregon (Benton, Clackamas, Hood River, and Wasco counties) and south-central Washington (Kittitas and Yakima counties). It is common on Mt. Hood and Mt. Adams. It typically grows with <i>E. marifolium</i>, and mixed collections often are found in herbaria; the two taxa have in common a distinctive olive green color of the adaxial leaf surfaces. Haussknecht’s sulphur flower is not always clearly distinct from <i></i>var.<i> modocense</i>. It is occasionally seen in cultivation, especially in European gardens.</p>
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|discussion=<p>Variety haussknechtii, as here circumscribed, is a high-elevation taxon found mainly on volcanic peaks in north-central Oregon (Benton, Clackamas, Hood River, and Wasco counties) and south-central Washington (Kittitas and Yakima counties). It is common on Mt. Hood and Mt. Adams. It typically grows with <i>E. marifolium</i>, and mixed collections often are found in herbaria; the two taxa have in common a distinctive olive green color of the adaxial leaf surfaces. Haussknecht’s sulphur flower is not always clearly distinct from <i></i></i>var.<i><i> modocense</i>. It is occasionally seen in cultivation, especially in European gardens.</p>
 
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|publication year=1903
 
|publication year=1903
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V5/V5_681.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V5/V5_681.xml
 
|subfamily=Polygonaceae subfam. Eriogonoideae
 
|subfamily=Polygonaceae subfam. Eriogonoideae
 
|genus=Eriogonum
 
|genus=Eriogonum

Revision as of 20:09, 24 September 2019

Herbs, typically prostrate, sprawling mats, 0.5–1.5 × 1–4 dm. Aerial flowering stems spreading to erect, 0.3–0.6(–1.5) dm, thinly tomentose, without one or more leaflike bracts ca. midlength. Leaves typically in tight rosettes; blade usually broadly elliptic, 0.5–1.5(–2.5) × 0.5–1.2(–1.5) cm, tannish-tomentose abaxially, thinly tomentose or glabrous and olive green adaxially, margins plane. Inflorescences compact-umbellate; branches 0.1–1.5(–2) cm, thinly tomentose, without a whorl of bracts ca. midlength; involucral tubes 1.5–3.5 mm, lobes 1–4 mm. Flowers 2–6 mm; perianth bright yellow.


Phenology: Flowering Jun–Sep.
Habitat: Volcanic, sandy to gravelly slopes and ridges, mixed grassland and sagebrush communities, montane to subalpine conifer woodlands
Elevation: 1000-2500(-3100) m

Discussion

Variety haussknechtii, as here circumscribed, is a high-elevation taxon found mainly on volcanic peaks in north-central Oregon (Benton, Clackamas, Hood River, and Wasco counties) and south-central Washington (Kittitas and Yakima counties). It is common on Mt. Hood and Mt. Adams. It typically grows with E. marifolium, and mixed collections often are found in herbaria; the two taxa have in common a distinctive olive green color of the adaxial leaf surfaces. Haussknecht’s sulphur flower is not always clearly distinct from var. modocense. It is occasionally seen in cultivation, especially in European gardens.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
(Dammer) M. E. Jones +
Eriogonum haussknechtii +
Haussknecht’s sulphur flower +
Oreg. +  and Wash. +
1000-2500(-3100) m +
Volcanic, sandy to gravelly slopes and ridges, mixed grassland and sagebrush communities, montane to subalpine conifer woodlands +
Flowering Jun–Sep. +
Contr. W. Bot. +
Illustrated +  and Endemic +
Eriogonum umbellatum subsp. haussknechtii +
Eriogonum umbellatum var. haussknechtii +
Eriogonum umbellatum +
variety +